Mix onion, ginger, fish sauce, lemon grass, lemon juice, mint leaves and salt together. Marinate the fish fillets in the mixture and keep aside for 10 minutes.
Cook the fish in a preheated oven in 300 F till both sides are cooked.
Put the sprout and green peas over the fish and bake for another 10 minutes.
Fish grilled with sprout, a healthy, tasty and easy to prepare recipe is ready.